2,3-Dihydroisoindolones by cyclisation and rearomatisation of lithiated benzamides
作者:Jonathan Clayden、Christel J. Menet
DOI:10.1016/s0040-4039(03)00545-8
日期:2003.4
Lithiation of tertiary aromatic N-benzyl amides generates [alpha]-amido benzyllithiums which cyclise with dearomatisation to cyclic extended enolates. Rearomatisation by oxidation, or, in the case of methoxy-substituted enolates, elimination, yields 2,3-dihydroisoindoles. Enantiomerically enriched products may be formed either by using a chiral base to lithiate the starting material or by using a chiral starting material. (C) 2003 Elsevier Science Ltd. All rights reserved.